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13680803 = 23835741
BaseRepresentation
bin110100001100…
…000010100011
3221202001112102
4310030002203
512000241203
61205121015
7224166503
oct64140243
927661472
1013680803
1177a4654
1246b916b
132ab0066
141b61a03
151303888
hexd0c0a3

13680803 has 4 divisors (see below), whose sum is σ = 13688928. Its totient is φ = 13672680.

The previous prime is 13680773. The next prime is 13680809. The reversal of 13680803 is 30808631.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 30808631 = 74401233.

It is a cyclic number.

It is not a de Polignac number, because 13680803 - 26 = 13680739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13680809) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 488 + ... + 5253.

It is an arithmetic number, because the mean of its divisors is an integer number (3422232).

Almost surely, 213680803 is an apocalyptic number.

13680803 is a deficient number, since it is larger than the sum of its proper divisors (8125).

13680803 is an equidigital number, since it uses as much as digits as its factorization.

13680803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8124.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 13680803 is about 3698.7569533561. The cubic root of 13680803 is about 239.1684357388.

The spelling of 13680803 in words is "thirteen million, six hundred eighty thousand, eight hundred three".

Divisors: 1 2383 5741 13680803